local/bin/homesync: Let user set path where data is looked up for indexing

.local/bin/homesync

@@ -5,11 +5,15 @@ usage() {
 Usage: ${0##*/}
 
 Sync home folder.
+Data is indexed to ~/personal/index.
+
+The '~/.gnupg' folder can be backup up to a LUKS encrypted device.
 
 Options:
 
-  -p: Push upstream.
-  -d DEVICE: Device where to store ~/.gnupg
+  -d PATH:   where the data is looked up for indexing.
+  -g DEVICE: Device where to store ~/.gnupg
+  -p:        Push upstream.
 
 EOF
 	exit
@@ -17,14 +21,17 @@ EOF
 
 OPT_UPDATE=false
 OPT_DEVICE=""
-while getopts ":hd:p" opt; do
+OPT_DATAROOT=$(findmnt -n --fstab --output TARGET | grep ^/media/)
+while getopts ":hd:g:p" opt; do
 	case $opt in
 	h)
 		usage
 		exit ;;
+	d)
+		OPT_DATAROOT="$OPTARG" ;;
 	p)
 		OPT_UPDATE=true ;;
-	d)
+	g)
 		OPT_DEVICE="$OPTARG" ;;
 	\?)
 		usage
@@ -52,8 +59,7 @@ message() {
 }
 
 section Data index
-DATAROOT=/media/$(ls -1 /media)
-for i in "$DATAROOT"/*; do
+for i in "$OPT_DATAROOT"/*; do
 	mkdir -p ~/personal/index/
 	case "$i" in
 	*/locate.db|*/lost+found|*/Sync*)